喷涂缠绕保温管用全水发泡聚氨酯组合聚醚的研制

用聚醚多元醇A、聚醚二醇B、聚酯多元醇PS-2915、三乙醇胺、水和其他助剂制备了喷涂管道用全水发泡聚氨酯硬泡组合聚醚,并对其反应性能、黏度进行评价,对使用该组合聚醚和多异氰酸酯PM-200制得的聚氨酯泡沫材料的性能进行研究。结果表明,在合适的原料用量时,制得的组合聚醚黏度较低,与多异氰酸酯PM-200的反应速度满足喷涂管道生产工艺要求。当喷涂制得的聚氨酯泡沫单层厚度7 mm左右,泡沫体具有较高的粘接强度、较好的韧性和较低的导热系数,密度61 kg/m^3的泡沫压缩强度达到526 kPa。制得的喷涂管道产品满足GB/T 34611—2017要求。     

高阻燃软泡聚醚多元醇ZSR-290的制备及应用

以高活性聚醚1618A、三聚氰胺、甲醛水溶液和双氰胺等为原料,有机锡络合物为催化剂,自制的聚脲多元醇为高效分散剂,合成了高阻燃聚醚多元醇ZSR-290。探讨了含氮类有机化合物、合成聚脲多元醇时的陈化温度、高效分散剂用量等因素对高阻燃聚醚多元醇性能的影响。用本阻燃聚醚产品制得的聚氨酯泡沫具有良好力学性能以及离火自熄的优良阻燃性能。     

硬泡阻燃聚醚多元醇的合成及应用

通过Mannich反应,以三聚氰胺、甲醛、二乙醇胺等为原料,合成了三聚氰胺基阻燃聚醚多元醇。探讨了温度对反应的影响,得出了最佳合成反应温度。同时将该三聚氰胺基阻燃聚醚多元醇在硬质聚氨酯泡沫塑料中进行了应用,制得的硬质聚氨酯泡沫具有良好的阻燃性能,氧指数高达30%以上。利用该三聚氰胺基阻燃聚醚多元醇制得的硬质聚氨酯泡沫强度高、导热系数低和吸水率低,在建筑保温方面具有良好的应用前景。     

4min快速脱模环戊烷型组合聚醚

开发了一种以聚醚多元醇、泡沫稳定剂、叔胺催化剂、环戊烷、水等原料配置的组合聚醚,可用于4 min快速脱模冰箱组合料的生产.讨论了聚醚多元醇、催化剂、泡沫稳定剂、环戊烷等对快速脱模的影响.结果表明,该组合聚醚贮存稳定性好,制得的的泡沫性能优良,能满足4 min快速脱模冰箱组合料的生产.     

苯酐聚酯多元醇聚氨酯硬泡的阻燃性研究

以国产苯酐聚酯多元醇为主要原料制备了组合聚醚,再与多异氰酸酯反应,制备了阻燃型聚氨酯硬质泡沫。讨论了苯酐聚酯多元醇、硅油及发泡剂等因素对泡沫阻燃性的影响。结果表明,该组合聚醚与多异氰酸酯反应,制得的阻燃型聚氨酯硬质泡沫,其氧指数在28以上,压缩强度为300kPa,达到了国家标准GB／T8624-1997中B2级氧指数的要求。     

高吸油性能软质聚氨酯泡沫的合成研究

以聚醚多元醇(N220、N330)和甲苯二异氰酸酯(TDI)为原料,采用一步发泡法,合成一种泡沫质地柔软、泡孔结构较好、且具有较高吸油性能的软质聚氨酯泡沫。研究了催化体系、TDI指数、物理发泡剂、聚醚多元醇、水、泡沫稳定剂等对泡孔结构和吸油性能的影响。得到了最佳工艺配方,即:聚醚多元醇100份,TDI指数103%,A33为4.8份,辛酸亚锡(T9)0.8份,泡沫稳定剂为4份,物理发泡剂(141b)20份,水10份。制得的泡沫结构较好时,对原油的吸油倍率为35 g/g。     

泡沫填缝剂用聚醚多元醇的研发

介绍了一种泡沫填缝剂用聚醚多元醇的合成方法。采用了季戊四醇作为起始剂、环氧丙烷、环氧乙烷作为聚合单体、辅以环氧乙烷封端,氢氧化钾作为催化剂,通过选择适合的聚合反应条件,两步聚合从而制得一种性能优异的高官能度高活性聚醚多元醇。并对其反应条件及应用于泡沫填缝剂的使用性能进行了研究。     

聚醚多元醇对单组分聚氨酯泡沫填缝胶性能的影响

研究了聚醚多元醇的官能度及相对分子质量对单组分聚氨酯泡沫填缝（密封）胶性能的影响。聚醚二醇和聚醚三醇复配使用，可制得综合性能良好的单组分聚氨酯泡沫胶体系。     

难燃级硬质聚异氰脲酸酯泡沫的研制

采用自行研制的聚酯多元醇、阻燃聚醚多元醇与添加型阻燃剂等助剂配制的组合聚醚,和多异氰酸酯进行反应,制得低发烟量、低脆性的难燃型聚异氰脲酸酯泡沫。讨论了聚酯多元醇、阻燃聚醚多元醇、添加型阻燃剂、泡沫稳定剂、异氰酸酯指数及催化剂等对泡沫性能的影响。试验表明,泡沫成型密度为52 kg/m3,氧指数为32,导热系数为0.024 W/(m·K),烟密度(SDR)为45％,压缩强度为0.300 MPa。     

催化体系对聚氨酯泡孔结构及其力学性能的影响

在A1/A33催化体系下,采用新型聚合物聚醚多元醇36/28和普通聚醚多元醇330N与TM300体系反应,制备了一种高回弹聚氨酯泡沫.考察了催化体系对聚氨酯泡沫泡孔结构以及性能的影响,探讨了孔径大小与泡沫力学性能的关系.结果表明,制品的力学性能与聚氨酯泡沫的孔径大小并不是简单的线性关系,还受泡沫开闭孔率的影响,当催化体...     

Preparation of rigid,low-density,flame-retardant polyurethane foams from whey permeate

The disposal of whey and whey permeate derived from the cheese industry is a serious economic and environmental problem. Lactose in whey permeate was used to synthesise polyether polyols from which rigid, low-density polyurethane foams were prepared. Resultant foams were comparable to those made from commercially available sucrose-based polyether polyols. Brown-coloured lactose polyether polyols are characterised by low viscosity and high carbonyl content. Urea incorporated into these polyether polyols yields flame retardant (self-extinguishing) foams. Urea also reduced the amount of phosphorus and/or halogen based fire retardants needed to make the foams non-burning. A preliminary economic analysis indicates that whey-based polyether polyols can be prepared at a cost savings of up to 36% compared to the sucrose counterparts.     

高相对分子质量低不饱和度聚醚多元醇技术进展

阐述了传统聚醚多元醇的技术进展、合成高相对分子质量低不饱和度聚醚多元醇的催化体系及研究进展，对高相对分子质量低不饱和度聚醚多元醇在聚氨酯泡沫、弹性体和密封胶中的应用进行概述，并就其未来发展提出建议。     

硬泡用聚酯型聚醚多元醇的合成与应用

主要介绍了聚酯型聚醚多元醇的合成与应用,讨论了影响聚酯型聚醚多元醇产品质量的主要因素,所研制的聚酯型聚醚多元醇Y–102E与环戊烷相容性良好,并具有优异的泡沫综合性能。     

Nanofilled polyols for viscoelastic polyurethane foams

The use of polyether polyols is common in polyurethane industry, particularly in soft PU applications. In particular, viscoelastic foams, characterized by slow recovery after compression, are obtained using poly(ethylene oxide) (PEO) polyols. Nanofilled polyols can be used for the production of viscoelastic foams with improved fire resistance properties. The high polarity of polyether polyols is responsible of a poor affinity with the organic modifiers used in commercial organically modified montmorillonite (omMMT). In this work, organically modified montmorillonites were prepared, having an improved affinity with the polyether polyols used for the production of soft PU foams. The montmorillonite was modified by using polyetheramines with different ethyleneoxide/propyleneoxide amounts. A strongly intercalated/exfoliated structure was obtained after mixing the polyol with the omMMT. The viscosity increased by three orders of magnitude and the diffraction angles of the MMT measured by x‐ray analysis decreased to values lower than 1.5°. The intercalated structure was preserved after the curing stage, when the isocyanate was added to the polyol/omMMT. The resulting polyurethane had an irregular open cell structure, and was characterized by a mechanical properties comparable to those of unfilled polyurethane. Copyright © 2009 Society of Chemical Industry     

可再生聚酯多元醇的合成及其在聚氨酯材料中的应用

采用油酸为主要原料合成了羟值为236mgKOH／g、酸值为2．8mgKOH／g的可再生聚酯多元醇,并以此聚酯多元醇为原料制备了聚氨酯硬质泡沫。研究了该聚酯多元醇用量对泡沫发泡和力学性能的影响。结果表明,随着聚酯多元醇加入量的增加,形成聚氨酯硬质泡沫的反应速度增加;与纯聚醚多元醇制备的聚氨酯硬质泡沫相比,加入20％～30％的该聚酯多元醇制备的聚氨酯泡沫的尺寸稳定性和压缩强度增加。     

Solvent-blown,rigid urethane foams from low cost castor oil-polyol mixtures

The preparation of solvent-blown rigid urethane foams from low cost castor oil-polyol mixtures was investigated. Solutions of triisopropanolamine, and of mixtures of triisopropanolamine and triethanolamine in castor oil, were used as the polyol component of these foams. Foams were prepared by reacting these polyol mixtures, in the presence of catalyst, surfactant, and trichlorofluoromethane, with prepolymers prepared from toluenediisocyanate and certain polyether polyols or mixtures of these polyether polyols with castor oil. The effect of polyol and prepolymer composition and blowing agent concentration on such foam properties as density and compressive strength was investigated. The properties of the castor oil-based foams were comparable to those of foams obtained from more costly polyols. Presented at the Spring Meeting of the American Oil Chemists' Society, St. Louis, Missouri, May 1–3, 1961. A laboratory of the Western Utilization Researchand Development Division, Agricultural Research Service, U. S. Department of Agriculture.     

新型高分子量聚醚

介绍了用于软泡、高回弹泡沫和弹性体的各种高分子量聚醚。详细介绍了阿科（Ａｒｃｏ）公司最新开发的Ａｃｃｌａｉｍ聚醚它具有极低的不饱和度和很高的相对分子质量，用于制备ＭＤＩ／丁二醇型浇注聚氨酯弹性体，加工性和机械性能均获明显改善。     

难燃聚氨酯软质泡沫的制备及性能研究

用新型难燃接枝聚合物聚醚多元醇和聚醚多元醇3050的混合物与甲苯二异氰酸酯(TDI)自由发泡反应，制备了阻燃型聚氨酯软质泡沫。讨论了难燃接枝聚合物聚醚多元醇的用量对聚氨酯软质泡沫密度、氧指数和力学性能的影响。结果表明，随着难燃聚醚用量的增加，聚氨酯软质泡沫的阻燃性能提高，力学性能也有显著提高，泡沫体的密度降低。     

结构型阻燃聚醚多元醇对聚氨酯硬质泡沫阻燃性能的影响

用含磷氮元素的结构型阻燃聚醚多元醇制备硬质聚氨酯泡沫,考察了结构型阻燃聚醚的用量对泡沫物理性能和阻燃性能的影响。结果表明结构型阻燃聚醚加入使泡沫的压缩强度、尺寸稳定性和氧指数均有明显的提高;当结构型阻燃聚醚的质量占聚醚用量的30%,添加适量的混合阻燃剂时,其氧指数达32%以上;此外,在同一阻燃要求下结构型阻燃泡沫制品的阻燃剂添加量明显减少,但泡沫的各项性能得到显著提高。     

开孔剂GK-350D在高回弹聚氨酯软质泡沫中的应用

采用多元醇、甲苯二异氰酸酯和自制的开孔剂GK-350D制备了密度为32～35 kg/m3的聚醚型高回弹聚氨酯软质泡沫。用FoamatLR2-40 PFT型测定仪跟踪了泡沫的发泡过程,从其发泡曲线上求取了泡沫开孔后的下沉率,表征了开孔剂在泡沫中的开孔能力。结果表明,GK-350D用量为1.2份时,具有较高的开孔能力,开孔性能与国际同类产品水平相当,且没有影响聚氨酯泡沫制品的性能。